On a cluster server, every time I apply a registry key to enable logging or change the Host Name it seems to disappear when certain Pharos services start or restart.
Remove the registry replication that is associated with each Pharos Server:
Open Cluster Administrator
Go to Disk Group 1
Right Click on the a Pharos Service
Click on Registry Replication
Remove the entry "Software\Pharos"
Complete this process for each Pharos Service and on both nodes
Then stop the services / take them offline
Apply the specific keys
Add the Registry Replication entry "Software\Pharos" to each Pharos service
Bring the services back online
The new registry settings will be saved in the registry.